Hot-air furnace



Oct. 15, 1929. -k 1,731,997

HOT AIR FURNACE Filed May 10, 1928 3 Sheet-$heet l 1N VENTOR Charles J Bz'ek ATTORNEYS Oct? 15, 1929. c. J. BIEK 73 HOT AIR FURNACE Filed May 10, 1928 3 Sheets-Sheet 2 INVENTOR Charles J BIek ATTORNEYS Oct. 15, 1929. c. J. BIEK HOT AIR FURNACE Filed May 10, 1928 3 Sheds-Sheet 3 [N VE/V TOR Charies J Bzek ATTORNEYS Patented Oct. 15, 1929 TENT OFFEQE CHARLES J. BIEK, OF DOWAGIAC, MICHIGAN HOT-AIR rirnuaon Application filed May 10,

My improved hot air furnace is especially designed by me for the burning of although desirable for use with other fuels.

The main objects of the invention are:

First, to provide a hot air furnace adapted for the burning of gas which is highly efficient and one in which a high percentage of the heat units of the fuel is utilized or taken up by the air.

Second, to provide a structure of the class described which is simple and economical in its parts and the parts adapted for convenient assembly.

Objects pertaining to details and economics of the invention will definitely appear from the description to follow. The inven tion is defined in the claims.

A structure embodying the features of my invention is clearly illustrated in the accompanying drawings, in which:

Fig. 1 is a fragmentary perspective view of a hot air furnace embodying the features of my invention.

Fig. 2 is a detail view partially in vertical section on a line corresponding to line 22 of Figs. 3 and 4C.

3 is a horizontal section on line 3 3 of Fig. 2.

Fig. t is a horizontal section on line 44.- of Fig. 2.

Referring to the drawings, 1 represents the casing of a hot air furnace, the hot air flues being shown at 20 and a cold air intake at 21. This is of suitable dimensions to house the furnace proper which consists oi a base 2 on which a combined combustion chamber and radiator unit 3 is mounted. This combined combustion chamber and radiator unit is formed of two vertical sections having co acting joint flanges on their meeting edges and opposed ears adapted to receive the connecting bolts.

The unit 3 is expanded upwardly and its upper portion has vertical flute-like convolutions 4 therein terminating in the dome 5.

The down-draft fines 6 are formed integrally with the sections of this unit, these lines being disposed in opposed relation.

I provide an inverted conical baflle plate 7 having extensions or projections 8 ntending 1928. Serial No. 276,542.

into the flutings into which the fines are merged and engaging supporting lugs 10 on the walls. It also has extensions 9 which engage between lugs 10 on the inwardly curved portions 11 of the walls between the flutings. Thus arranged a plurality of communicating openings 12 are provided for the combustion chamber to the radiator chamber. The edges oi the sections are provided with coacting joint ribs and recesses 13 and 14-.

At the lower ends of the tines I provide a horizontally disposed manifold. 15 which is of segmental shape and provided with a cen tral upwardly extending discharge flue 16. The air in circulating through the casing is i brought into contact with the walls of the combustion chamber and radiator chamber, the downdraft flues, themanii'old and the discharge flue.

A burner 17 provided with a plurality of tips is mounted on the brackets 18 at the lower end of the combustion. chamber. The burner illustrated is a burner. although the structure is wclladapted to an oil burner. The products of combustion are brought into intimate contact with the walls oi? the combustion chamber and radiator chamber and are uniformly distributed therein.

Structures embodying my invention are economical. in their parts and the parts are easily assembled. Furnaces embodying my improvements are also very erticient.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1.. The combination in a furnace. of a combined combustion chamber and radiator unit having upwardly ex iianding walls terminating in a dome, the upper portions oi the walls having vertical flue-like convolutions therein extending into the dome, said unit having opposed integral vertical down-draft flues merging into opposed flutings and being vertically sectioned through the central plane of the flues, the sections having meeting joint flanges on their edges, the walls of the unit being provided with baffle plate supporting lugs disposed in a plane below the flue openings, an inverted conical baffle plate engaging said lugs and. having projections extending into the flutings into which said fines are merged and other projections engaging the walls between adjacent flutings whereby the baflle plate coacts with the flutings to provide a plurality of communicating openings from the combustion chamber below the battle to the radiator chamber above the bafile, a horizontally disposed manifold connected to the lower ends of said fines, and a discharge flue connected centrally to said manifold. 2. The combination in a furnace, of a combined combustion chamber and radiator unit having upwardly expandingwalls terminating in a dome, the upper portions of the walls having vertical. flue-like convolutionstherein extending into the dome, said unit having opposed integral vertical down-draft flues merging into opposed flutings and being vertically sectioned through the central plane of the fines, the sections having coacting joint flanges on their edges, the walls of the unit being provided with baffle plate supporting lugs disposed in a plane below the flue openings, and an inverted conical ba-flle plate engaging said lugs and having projections extending into the flutings into which said flues are merged and otherprojections engaging the walls between adjacent flutings whereby the bafile plate coacts with the flutings to provide a plurality of communicating openings from the combustion chamber below the bafile to the radiator chamber above the bafile. I 3. The combination in a furnace, of a combined combustion chamber and radiator unit having upwardly expanding walls terminating in a dome, theupper portions of the walls having vertical flue-like convolutions therein extending into-the dome, said unit having integral vertical down-draft fiues merging into opposed flutings a bafile plate having projections extending into the flutings into'which said fines are merged and other projections engaging the walls between adjacent flutings whereby the baffle plate 7 coacts with the flutings to provide a plurality'of'communicating openings from the combustion chamber below the baffle plate to the radiator chamber above the battle, a horizontally disposed manifold connected to the lower ends of said flues, and a discharge line connected centrally to said manifold.

l. The combination in a furnace, of a combined combustion chamber and radiator unit ing projections'extending' into the flutings into which said flues are merged and other projections engaging the walls between adjacent flutings whereby the baffle plate coacts hand. i

CHARLES J. BIEK. 

